Excellent stuff. Very good speaker, it is important to be able to keep speech funny and interesting.

Of course main point is not to be funny but informational instead. But if one fells a sleep or lower state of consciousness while listening he/she does not learn a lot.
I have watched many lectures from not-so-good-speakers and those cause my mind to start wandering so badly that I have to rewind all the time when I notice that I have note really listened.

I could listen this video easily and learned a lot. This was 2nd. time I watched it and I am gonna watch again. Good entertainment. Thx!